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Technical content
Features
Six Filter Types In One Package No External Components Switched-Capacitor Filters Low Power Operation Low Voltage Operation Adjustable Gain 0, 6 or 12 dB Small Package Size Low Cost On Chip Power Save Pin ANSI Compatible Bandpass
Applications
Lowpass Responses Bandpass Responses Web Site “www.mix-sig.com” © 2004-2014 Mixed Signal Integration 1
Selectable Low Voltage Lowpass/Bandpass Filter Data Sheet (VDD = +1.2V, T = 25 C) o Web Site “www.mix-sig.com” © 2004-2014 Mixed Signal Integration 2 PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS DC Specifications Operating Voltage VDD 1 1.2 3.6 V Supply Current IDD VDD = 3.3V 1.5 mA Supply Current IDD VDD = 1.0V 500 uA Supply Current IPD Power Down, PD=1 50 uA AC Specifications Gain Av -0.5 0 0.5 dB Noise To 1/2 Sample 250 uVrms Distortion THD -62 dB Signal Swing 1 kHz, VDD = 1.2V 800 mV p-p Input Impedance ZIN 1 Mohm Output Drive Io 1 mA Output Impedance Zo 500 ohm Output Capacitive Load 22 pF Clock to Corner * Fo=1 85.3 Hz/Hz Clock to Corner * Fo=0 42.65 Hz/Hz Center Frequency Range Fo 0.001 6 kHz Ripple Elliptic Lowpass 0.2 dB Full Octave 0.2 dB Third Octave 0.2 dB Sixth Octave 0.2 dB Stop Band Rejection Elliptic/Butterworth Lowpass fCLOCK = 2.048 MHz 75 dB Bessel Lowpass fCLOCK = 2.048 MHz 65 dB 40 dB Bandwidth Full Octave Normalized Fo 0.3 3 Third Octave Normalized Fo 0.6 1.67 Sixth Octave Normalized Fo 0.76 1.32 Bandpass Q Full Octave Q Q 1.5 Third Octave Q 4.5 Sixth Octave Q 9 * External clock is 8X internal clock
FSEL=0 FSEL=1 TYPE Lowpass Bandpass
0 Butterworth Full Octave
1 Bessel Third Octave
2 Elliptic Sixth Octave
The filter type is selected using the two filter select pins, TYPE and FSEL, FSEL is a pin that selects lowpass or bandpass (lowpass = 0, bandpass = 1). TYPE is a tertiary control pin that selects the filter response. State 0 is VSS, state 1 is GND and state 2 is VDD. MSLFS Selectable Low Volta ge Lowpass/Bandpass Filte r Data Shee t 1. TYPE Filter Response Select Pin 2. GND AC Ground, decouple w i t h 0.1 uF to VSS 3. VREF Reference Voltage, internally generated, typically VDD/2.2 for Single Supply Operation 4. MICIN Input to Mic Amp 5. MICOUT Output of Mic Amp 6. FO Clock to Corner Select Pin 7. G Gain Select Pin 8. FSEL Selects Filter. 0 = Low Pass, 1 = Bandpass 9. VDD Positive Power Supply, Typically
1.2 Volts for Single Supply
- CTVL Activate or Disable Boost Circuit 11. PD Power Down Pin, CMOS level, H i = Power Down 12. CLK Clock Input 13. PWR Sets Bias Current for Filter Stages, Lo=low power, Hi=normal power 14. OUT Filter Output 15. VSSL Bypass Capacitor for Boost Circuit, v o l t a g e at this pin is negative in relation t o VSS, tie positive side of polarized cap to VSS 16. VSS Ground Pin, 0 Volts for Single Supply Pin Configuration The Gain control pin G is a tertiary control pin where state 0 is VSS, state 1 is GND level and state 2 is VDD. G Gain
0 OdB
The frequency control pin F0 is a pin where high is clock to corner of 85.3 to 1 (170.6 to 1 for Bessel) and low is clock to corner of 42.65 to 1 (85.3 to 1 for Bes- sel). TYPE VSS GND VSSL VREF OUT MICIN PWR MICOUT CLK FO PD G CTVL FSEL VDD
16 Pin
Web Site “www.mix-sig.com” © 2004-2014 Mixed Signal Integration 3
Selectable Low Voltage Lowpass/Bandpass Filter Data Sheet Digital Levels All the clock and control pins are referenced between VSS and VDD. In single supply appli- cations, the digital levels should be CMOS lev- els from VSS to VDD. The tertiary controls (pins - TYPE and GAIN) should be set at VSS, VREF or VDD depending on the filter type or gain de- sired. Part Number Package MSLFSP 16 Pin DIP MSLFSS 16 Pin SOIC Absolute Maximum Ratings Power Supply Voltage +5V Storage Temperature -60 to +150 C Operating Temperature 0 to 70 C Web Site “www.mix-sig.com” © 2004-2014 Mixed Signal Integration 4 Mixed Signal Integration Corporation reserves the right to to change any product or specification without notice at any time. Mixed Signal Integration products are not designed or authorized for use in life support systems. Mixed Signal Integration assumes no responsibility for errors in this docu- ment. FSEL TYPE GAIN MICOUT MICIN SCF Out Section VREF One Clock PD Fo CTVL Adjustable Gain SCF Section Two SCF Section Three SCF Lowpass Buffer Clock Divider Low Voltage Circuitry
Selectable Low Volta ge Lowpass/Bandpass Filte r Data Shee t MSLFS Web Site “www.mix-sig.com” © 2004-2014 Mixed Signal Integration 5 Typical Application Schem atic M SLFS FSEL GND1 VREF M ICIN M IGCS FO N G TYPE VSS VSSL OUT PW R CLK PD CTVL VDD 1.1V VDD C1 100nF 100nF 10kohm 100kohm 2.048M Hz 1.1V 100nF C4 100nF 0.75V 1000Hz 0Deg SINE SOURCE 0.55VDC R3 100kohm R4 100kohm R5 100kohm R6 100kohm R7 100kohm FILTERO UT R8 100kohm R9 100kohm R10 100kohm R11 100kohm R12 100kohm
Selectable Low Volta ge Lowpass/Bandpass Filte r Data Shee t MSLFS Web Site “www.mix-sig.com” © 2004-2014 Mixed Signal Integration 6 Notes
Selectable Low Volta ge Lowpass/Bandpass Filte r Data Shee t MSLFS Web Site “www.mix-sig.com” © 2004-2014 Mixed Signal Integration 7 STANDARD PRODUCTS MSRFIF Radio Frequency Interface Front End MSFIPS FIPS-140 Level 4+ Security Supervisor MSSCSA Single Chip Spectrum Analyzer MSTHDA Total Harmonic Distortion Analyzer MSLSA Low Power Spectrum Analyzer MSCPSI Controller Program mable Sensor Interface MSSPSI Smart Programm able Sensor Interface MSEPAF Electrically Pr ogrammable Active Filter MSCBT Communications Baseband Transceiver MSGEQ5A Five Band Spectrum Analyzer MSGEQ7 Seven Band Spectrum Analyzer MSHFS1-6 Selectable High Frequency LP/BP Filter MSFS1-6 Selectable Lowpass/Bandpass Filter MSU1F1-4, MSU2F1 Resistor Programmable Universal Active Filter MSU1HF1-4, MSU2HF1 High Frequency Resistor Programmable Universal Active Filter MSELP Switched Capacitor Elliptic Lowpass Filter with Op Amps MSNBLP Switched Capacitor Butterworth Lowpass Filter MSLE/B/C5L/M Switched Capacitor General Purpose Lowpass Filter MS2LFS Dual Selectable Low Voltage Lowpass/Bandpass Filter MSLFS Selectable Low Voltage Lowpass/Bandpass Filter MSHN1-6 Selectable High Pass/Notch Filter MSDET Tone Detector
Selectable Low Volta ge Lowpass/Bandpass Filte r Data Shee t MSLFS Web Site “www.mix-sig.com” © 2004-2014 Mixed Signal Integration 8 Mixed Signal Integration 2157F O'Toole Avenue San Jose, California 95131-1332 Phone: (408)-434-6305 In Mississippi, Alabama, Georgia In northern Illinois and South Carolina, North Carolina, and eastern Wisc onsin contact: Tennessee contact: AdeptRep Inc. M & S Sales
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